Replaced the door seal. While I had the machine apart, I also cleaned out the recirculation hose which was very dirty, and cleaned the filter and associated hoses. Collectively, it took me around an hour and a half to 2 hours, not including time it took to clean the parts which were soaked and scrubbed in bleach. The hardest part was getting the retaining spring back on, which you will definitely need 3 to 4 spring clamps to hold it in place while you get it into position.